Hi,
Clause in Association Bylaws
Do you have any clause in your association bylaws stating that members will be removed without any explanation if they default on the membership fee? Is your association registered or unregistered?
Providing a warning notice is straightforward, but without understanding the background of your association, we cannot provide an appropriate warning notice.
Alternative to Warning Notices
Instead of sending a warning notice, consider calling all members for a common meeting. Explain the hardships faced by the association due to the absence of membership dues from certain members. Obtain a declaration from those defaulters stating that if they fail to make the payment on or before [date], they agree to any action initiated by the association, including expulsion. It may be challenging to secure such direct letters, but try to convince them to either make the payment or leave to ensure the smooth operation of the association.